MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a435e2aab6dce39d626eacb39fc964967e35e94abf513da0f6511ab7b1f826e. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

Kimsuky

Vendor detections: 10

Maldoc score: 5

Intelligence 10 IOCs YARA 5 File information Comments

SHA256 hash:	6a435e2aab6dce39d626eacb39fc964967e35e94abf513da0f6511ab7b1f826e
SHA3-384 hash:	506c81564e9513af1c661765132b8525f57e172b785ec442576c45342154dc4a80113b6007917598b99b6eb89a96121b
SHA1 hash:	c0ee5199cc15ed05fc6edf62a193deb819572cee
MD5 hash:	4de19e2c39b1d193e171dc8d804005a4
humanhash:	juliet-snake-tango-hamper
File name:	미국의 외교정책과 우리의 대응방향.doc
Download:	download sample
Signature	Kimsuky Create hunting rule
File size:	54'401 bytes
First seen:	2022-08-25 05:57:47 UTC
Last seen:	Never
File type:	doc
MIME type:	application/vnd.openxmlformats-officedocument.wordprocessingml.document
ssdeep	768:G/H4Gv0b1Qr1whrTRHUz2JKcwmB9kz6NSolOK7KJBBTxY2FiOiwZlw6N:Cv2cYlHssKcwUku0EKJB7FiOBwg
TLSH	T13733F131C206B028E7B188F960B42EF4D71D2006A1397C6DA51DE9EDDF5BA2E472B0DD
TrID	53.0% (.DOCM) Word Microsoft Office Open XML Format document (with Macro) (52000/1/9) 23.9% (.DOCX) Word Microsoft Office Open XML Format document (23500/1/4) 17.8% (.ZIP) Open Packaging Conventions container (17500/1/4) 4.0% (.ZIP) ZIP compressed archive (4000/1) 1.0% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter	Jagdtiger88mm
Tags:	doc Kimsuky

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id

Maldoc score: 5

OLE dump

MalwareBazaar was able to identify 10 sections in this file using oledump:

Section ID	Section size	Section name
A1	437 bytes	PROJECT
A2	41 bytes	PROJECTwm
A3	7449 bytes	VBA/ThisDocument
A4	3170 bytes	VBA/_VBA_PROJECT
A5	2637 bytes	VBA/__SRP_0
A6	154 bytes	VBA/__SRP_1
A7	1994 bytes	VBA/__SRP_2
A8	301 bytes	VBA/__SRP_3
A9	521 bytes	VBA/dir

OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

Type	Keyword	Description
AutoExec	AutoOpen	Runs when the Word document is opened
Suspicious	Create	May execute file or a system command through WMI
Suspicious	GetObject	May get an OLE object with a running instance

Intelligence

File Origin

# of uploads :

# of downloads :

407

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

6a435e2aab6dce39d626eacb39fc964967e35e94abf513da0f6511ab7b1f826e

Verdict:

Suspicious activity

Analysis date:

2022-08-24 13:46:28 UTC

Tags:

macros macros-on-open

Link:

https://app.any.run/tasks/da148ba5-bc7b-4d29-8aa6-65f4512fc4af

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

TwinWave.EvilDoc.DOCXRSTRGOOD.CREATEOBJECT.210223.UNOFFICIAL

TwinWave.EvilDoc.DOCXRSTRGOOD.WIN32_PROCESS.200408.UNOFFICIAL

TwinWave.EvilDoc.DOCXRSTRGOOD.WIN32_PROCESS.210419.UNOFFICIAL

TwinWave.EvilDoc.DOCXRSTRGOOD.WINMGMTS.210420.UNOFFICIAL

TwinWave.EvilDoc.DOCXRSTRGOOD.WSCRIPT.210223.UNOFFICIAL

TwinWave.EvilDoc.GOVarVarJaneSays.20210125.UNOFFICIAL

TwinWave.EvilDoc.StringBuidlersEveryRoseHasItsThorn.20210308.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Using the Windows Management Instrumentation requests

Sending a custom TCP request

Query of malicious DNS domain

Bypassing of proactive protection methods using Windows Management Instrumentation (WMI)

Creating a process from a recently created file

Sending an HTTP GET request to an infection source

Result

Verdict:

Malicious

File Type:

Word File with Macro

Link:

https://app.docguard.net/6a435e2aab6dce39d626eacb39fc964967e35e94abf513da0f6511ab7b1f826e/results/dashboard

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm macros macros-on-open wscript wscript.exe

Link:

https://www.filescan.io/uploads/63070f883cbb13868a7e0f08/reports/0fef1c3f-81f6-4693-9b81-c318cb881d4b/overview

Label:

Malicious

Suspicious Score:

5.2/10

Score Malicious:

53%

Score Benign:

47%

Link:

https://www.malware.ai/gui/files/?id=674a43e8-0c18-48e7-84b4-ba142b2dd75c

Result

Threat name:

Unknown

Detection:

malicious

Classification:

evad

Score:

72 / 100

Link:

https://www.joesandbox.com/analysis/1057446

Signature

Creates processes via WMI

Document contains an embedded VBA with functions possibly related to ADO stream file operations

Machine Learning detection for sample

Multi AV Scanner detection for submitted file

System process connects to network (likely due to code injection or exploit)

Wscript called in batch mode (surpress errors)

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/6a435e2aab6dce39d626eacb39fc964967e35e94abf513da0f6511ab7b1f826e/

Threat name:

Script.Trojan.Valyria

Status:

Malicious

First seen:

2022-08-24 00:13:29 UTC

File Type:

Document

Extracted files:

AV detection:

16 of 40 (40.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=njbv4kvlnxhdtvrg5lftt7ewjft6gxuuvp2rhwqpmui2w6y7qjxa._file

Result

Malware family:

n/a

Score:

10/10

Tags:

n/a

Link:

https://tria.ge/reports/220825-gn6zqshdc8/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies registry class

NTFS ADS

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: RenamesItself

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Office loads VBA resources, possible macro or embedded object present

Drops file in Windows directory

Deletes itself

Blocklisted process makes network request

Process spawned unexpected child process

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/6a435e2aab6d/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/6a435e2aab6dce39d626eacb39fc964967e35e94abf513da0f6511ab7b1f826e

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:	BitcoinAddress Create hunting rule
Author:	Didier Stevens (@DidierStevens)
Description:	Contains a valid Bitcoin address

Rule name:	malware_shellcode_hash Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect shellcode api hash value

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	pdb_YARAify Create hunting rule
Author:	@wowabiy314
Description:	PDB

Rule name:	vbaproject_bin Create hunting rule
Author:	CD_R0M_
Description:	{76 62 61 50 72 6f 6a 65 63 74 2e 62 69 6e} is hex for vbaproject.bin. Macros are often used by threat actors. Work in progress - Ran out of time

File information

The table below shows additional information about this malware sample such as delivery method and external references.

No further information available

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